Typewriting machine



Feb. 14, 1928.

i 1,659,225 J. wALDHslM TYPEWRIT'ING Mmmm:

Filed May 2o, 16925 z snens-sneet 1A Feb. 14, 1928.

J. WALDHEIM TYPEWRITING MACHINE Filed May 2o, 1925 2 sheets-snee: 2 Hg 5.

/n ven fori- Patented Feb."14,192s. i 1 2 l intitule JOHN WALDHEIM, F ELI'ZABETH, NEW JERSEY, ASSIGNOR T0- UNDERWOO'D TYPE- WBITER COMPANY, NEW YORK, N. Y., A CORFQRATION. 0F DELAWARE.

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Appucanen media-ay 2o, i925. semi No. 31,493.

rlhis invention relates to sound-reducing al view of a sound-proof cabinet for a type- 55 Cabinets for typewritng machines, writing machine of the present invention Such cabinets usually enclose the carriage having the cover equipped with a pivotally` and pr'ovide for access to the carriage by mounted glass window arranged to be swung having a cover hinged to the body-part of upwardly to open position by pressure upon the cabinet. Manipulation of the carriage an adjacent pivoted plate. ordinarily requires the use of hoth hands. Figure 2 is a partial side view of Figure The frequent lifting of the cover is apt to l shown partly in section and partly in elebe tiring in soine instances, especially when Vatlon. lhe dash-and-dot outline of the la the typwyiting machine has an @Xtra Wide cover shows it in partly open position. v Carriage. Figure 3 is a fragmentary sectional View 65 Moreover, it is usually necessary to conof the cabinet shown in Figure 2, showing struct special carriage handles, and nieans the pivoted window swung to open position, for Sealing them y and also illustintingl how the lingers of an tu Object of the pl-eggnt invention 1S t0 operative can have access through the winenablc the ordinary carriage handles to be dowto the fiiiger-pieces of the carriage. 7o used, and to render the frequent swinging Flgure i is a fragmentary front View of up of the @over unnecessary The Cabinet the parts of the cabinet shown in Figure 3. eucloses all finger-pieces of the carriage. lt Flg'ule 5 is a front elevational view of the su has a no1-many Close Window in its @over sound-proof cabinet for a typewriting inaso mounted that it can be easily pushed open chine having the cover equipped with a piv- 75 with L backward movement of the hand, otally-inounted glass window arranged to be which can he `advanced without change of swung upwardly to open position by presdirection through the window, to manipusure on a flanged linger strip along its lower late the carriage. Such a cabinet willv loe less edge.

expensive to manufacture, and durable. Figure 6 is a partialside view of Figure 5, s0

'ilie cabinet comprises a body-part and a Shown partly in section and partlyin elevacover overlying the carriage and hinged t0 tion, the daslnanchdot outline of the winthe back of the body-part in such aV manner dow showing it in open position. rll`lie dashthat when necessary it inay be readily swung andedot outline of a typewriting machine upwardly and rearwardly, and allowgreater and a finger illustrates how an operative can .85 convenience of access to the typewriting niahave access through the window after opencliine platen. The window is mounted in ing the sain-e to the finger-pieces of the niathis cover. chine. I A push plate or strip inay be pivoted in Figure 7 is 1a fragmentary view of the th@ @over and Conneted t0 Open sind wmparts of the cabinet shown in Figure 6. 9@

dow upwardly `when the plate is pushed. An Underwood typewriting machine 10, This push plate extends the whole length of provided with iinger-pieces 1l and a. platen the cover. 13 mounted on a carriage l2, is enclosed in 10 In another form the present invention a sound-proof cabinet which has a lower may take, the window may he provided with body-part composed of a boxslilie member a flanged finger-piece along its lower edge let and a front closure 15. The lower bodywith which the operatives hand may engage part may he of a suitable shape which will at any point to swing it open. enclose the lower part of the typewiiting 45 The body-part and cover of the cabinet machine l0 and allow full lateral movement y may remain substantially the saine in all of the carriage l2. Said body-part maybe cases. The front of the cover may rest on a attached to the feet of the machine lt) in the cushion. formed of a sound-deadening inusual manner. rThe cover, hood or canopy terior lining and be downwardly inclined l@ may fit over and be pivoted to the ineinao toward the front, i bei' la of the body at its upper rear edge by Other features and advantages will herehinges 17. lt can be readily seen that a inafter appear. i specially designed cover can be hinged7 lower In the accompanying drawings, down on, a body-part arranged for it. rlhe Figure 1 is a fragmentary front elevation# hack portion 18 and the ends 19 of the cover lil 16 may be vertical, and the top of the cover may be downwardly inclined toward the front and may include a curved portion adljacent the back 18 and an opening 20 extending lengthwise ot the cover, and arranged to be closed by a glass window 21 and a pivoted plate-part 27. The glass plate or window 21 is mounted in the metal rim 22 held by two metal lever arm parts 23 at the ends of the plate, which arms are pivoted on short pins 2d securely fastened in the end walls 19 o1 the cover 16.

The member 111 and the front closure 15 of the body, and all portions ot' the cover 1G integral with the back 18 may have an interior lining of a sounddeadening material like ielt. The lower edge o the inclined glass window 21, when in closed position, may rest on a soit, ielt cushion 26 cemented to a {hinge-member 2S of the narrow substantially T-shaped push plate or finger-bar 27 extending` lengthwise of the cover 1G. The plate 27 has a short, downwardly-inclined, tansverse arm 31 adjacent each end projecting from the lower side ot' the flange-member 28. The member 29 of the T-shaped plate 27 is pivotally mounted in normal vertical position in the front portion ot the cover 1G on two pins 33 in two short downwardly-projecting ears 32, one at each end ot' the T plate 2T. Recesses may be provided in the cover 1G for the ears 32, so that the member 29 may make a close joint with the coverportion 163 under it, so as to retard sounds of the typewriting machine.

Thetransverse arms 31 at each end of the flange-member 2S of the T plate 27 have holes through them for attaching looped ends of L-shaped link-members 31, which have their other ends bent to pass through and he secured to downward extensions ot the pivoted lever-arms 23 which support the glass window21. Twofsinall tension springs 35 fastened tothe lower ends oit the arms 23 and to studs 36 secured in the end walls 19 ofthe cover 16 hold the window 21 normally closed. It can be readily seen that the T plate-members 29. 2S and 31, the links 311, the arms 23 and the window 21 form leversystems arranged so that a light push from the front against the member 29 will cause the latter to swing inwardly and down wai-diy, and the front portion oil.l the glass top 21 to swing upwardly.

As illustrated in Figure the window 21 may be swung upwardly to substantially horizontal position when the end portion 3() ot' the pivoted T plate 27 has swung low enough to let an operatives lingers 50 pass over the end and conveniently reach the linger-pieces 11 ot the typewriting machine 10, while moving in substantially the same direction as when they began to push against the vertical front of the member 29 of the plate 27.

As the fingers 50 of the operative move the carriage 12 to the right, portions ot the fingers may be slid along in contact with the smooth rounded portion l0 ot the pusli-plate 2T, which will prevent the springs from closing the window 21 and the p11sliplate 2. To this end, the l'ront sur'iaee ot' the part 29 and its rounded portion 3l) are iinished smooth, so that the operatives lingers may slide over them readily with as little friction as possible. It can be readily seen that the glass window 21 and the push-plate 27 each close part of the opening in the cover 1G through which the operatives lingers pass to have access to the ii'igei'-; ieces 11 ot the typewritng machine 1t). lt can be further seen that the above-described co-active Opening action ot the window 21 and the pushplatc 2T provides a convenient and suliicient opening i'or access to the linger-pieces 11 by a simple pushing action oit the lingers, and requires less movement of the glass window 21 than if it alone were swung to provide the opening.

lli/hen the operative has moved the carriage 12 to the right? as 'far as the carriage stops (not shown) on the machine 10 will pcimit.y the lingers 50 may be withdrawn from the cover 16. tl`he pressure ot the lingers being removed from the rounded portion 30, action oi the springs causes the window 21 and the T plate 27 to swing into their normal closed positions.

In Figures 5, (l and 7 is shown a soundproof cabinet lor typewriting machines embodying another 'l'orm the present invention may take, comprising a cover GG provided with a pivotally-mounted glass window Gl. which has a flanged linger-strip 7() extending lengthwise oi the window along its lower edge. The window (l1 is mounted in a metal rim (i2 which is held on the arms (33 pivotally mounted on pins 6l securely held inv end walls G9 of the cover G6.

It will be noted that the pins Git are mount ed much lower in the cover G6 than corre spondfng pins 21- shown in Figure 2. This arrangement allows the opcratives fingers pushing on the iingei '-strip 70 at any point Vin substantially the direction of the fingerpieces 11` to swing the glass window (il upwardly to open position. The lingers of the operative moving the carriage 12 to the right can be conveniently held against the lower looped end 71 of the linger-strip 7() to prevent coil-springs G5 from closing the window while the carriage is moved to the right. lVhen the carriage 12 is moved to its tui-thermost operative position on the right of the machine 10, the lingers 5() may he withdrawn permitting the springs to close the window 61.

In Figure 2, the dot-and-dash line of the cover 16 illustrates howthe cover can be swung upwardly around its hinges 17. to

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give the operative access to the platen 13 of the machine i0 lier inserting worksheets 'for othen purposes. After the' paper has been inserted in the machine, the cover i6 can be lowered to its operative position, and the carriage ot the typewriting machine will be completely enclosed again.

lt will be noted that the cabinet includes a. hood or. cover: that entirely encases the machine; that an opening in the cover gives access to the carriagecontrolling element-s; that the opening in the cover is normally closed by a' two-part closure, one part thereofi including a pivoted window and the other Vart including a linger-bar g, that the linger- Ear. is operatively, connected to open the window by' the pressure of the linger against the bar` priori to the insertion or the linger to the carriage-controlling. elements; that the window is pivotally mounted within the easing to hang in equipoise and become seit balancing, requiring a very light pressure from the finger against the Vlinger-bar to swing the comparatively heavy window he tween open and closed positions, and requiring only a light spring to make the win dow seit-closing; and 'that the present method of' entirelyv enclosing the machine within the cabinet eliminates 'the projection of the carriage-controlling levers at the front of the cabinet, and the associated flexible slotclosing elements that retard the to-,and-ro movement 'of the carriage during the pas sage ot said levers between them.

Variations may be resorted to within the scope of the invention,v and portions ot the improvements may be used without others.

Having thus, described my invention, l claim: `v

l. The combination with a typcwriting machine having a carriage and carriage-controlling finger-pieces mounted thereon, oi a sound-proofv cabinet, said cabinet having a body-part to receive said machine and a cover 'to entirely enclose said carriage `and linger-pieces, said cover including a transparent window; extending lengthwise ot said cover andv pivotally mounted iu the ends thereof to hang in equipoise, said window, when closed, inclining downward toward the ,trent ot said cabinet to expose the ein closed carriage and arranged to be swung to a horizontal. open position. to give access to the finger-pieces ot' said carriage.

In a sound-proof cabinet for a typewriting machine, a cover theret'or including a self-balancing and self-closing window pivotally mounted within the covenand an independently-mounted finger-bar operatively connected to open the window to a horizontal position.

3. In a sound-proof cabinet for a. typewriting machine, having a carriage and carriage-controlling mechanism, a cover including a normally-closed window extending lengthwise of said cover and pivotally mounted in the ends thereofto hang in equipoise, said window having separate and dis,-y tinet connections operable by the pressure of an operatives finger moving in the direction ot the carriage-controlling mechanism to open the window. Y

l. The combination 'with `a typewriting machine having a carriage and carriage-,coul trolling linger-pieces mounted tl'iereon, of a sound-proot cabinet, said cabinet including a body-part to receive said machine and r1 cover to, enclose the machine and the linger pieces, said cover including a normallycloscd window pivotally mounted therein to counterluilance itselfif and respond to a light linger pressure, and means pivotally mounted within, the :trout ot said cover and operatively connected to open said wiiulow.

The combination with ay typewriting machine having a carriage and carriage-controlling linger-pieces mounted thereon, ot a smuid-proot cabinet, said cabinet including a bodypart to receive 4said machine and a cover to entirely enclose said carriage and linger-pieces, said cover including a normah ly-close'd window pivotally mounted therein to hangin equipoise and respond to a light linger pressure, anda linger-har pivotally mounted in the trout ot said cover and con-V nectihle to open said window when pushed inwardly by the lingers ot an operative moving` in a direction towards said linger-pieces.

(l. The combination with a typewriting machine havingl a carriage and linger-pieces mounted thereon, a sound-prooi; cabinet, said cabinet having a lower body-part to receive said machine and an upper part comprising a hinged cover. said parts arranged to entirely enclosey said linger-pieces, said cover provided with a transparent window pivotaly mounted therein arranged to be swung open, so as tol give access to the carriag ot said machine or manipulation purpores, and a vertically-positioned plate extending lengthwise ot' said cover pivot-ally mounted in the it'ront thereoV havingl :i

flange-member engaging under the lowerV edge ot' said cover, said plate arranged to be pushed iiiwardly by the fingers ot' an operative moving in the direction oit' said lingerpieces to cause said window to be swung open. i

7. In a sound-proof cabinet 'for a typewrit-ing machine, a cover therefor including a window pivotally mounted within the cover to become self-balancing, and a iinger bar pivoted Within the cover and operatively connected to open the window to give access to the machine.

8. In a sound-proof cabinet for typewrit ing machines, a cover therefor including a normally-closed, transparent window pivotally mounted within said cover, and means pivotally mounted in front of and below lil-5 i ing machines, a

said cover and connected to said window wherebyT the window may be swung open or shut in unison with said pivoted means.

In a. sound-proof cabinet for typewritliinged cover, a normallyclosed, transparent window mounted on two lever-arms pivoted in said cover, and a plate pivotally mounted in front of said cover having two projecting arms connected by links to said lever-arms, said window arranged to be swung open when said plate is swung inwardly.

l0. In a sound-proof cabinet it'or typewriting machines, a hinged cover, a normallyclosed, inclined, transparent window mounted on two lever-arms pivoted in the ends ot' said cover, and a plate pivotally mounted in front of said cover having a {lange-member arranged to engage under the lower edge ot' said window, said cover having two projecting arms connected by links to said leverarms, said window arranged to be swung into open position upwardly when said'plate is swung inwardly and downwardly.

ll. In a sound-prooiz cabinet :tor a typewriting machine, a cover therefor having an opening to give access to the machine, and a two-part closure for the opening, one part being operable to open and close the other part and to move in substantially the same direction therewith.

l2. In the cover oi" a sound-prooi:I cabinet t'or a typewriting machine, in combination, a pirotally-mounted glass window with a pivotally-mounted plate adjacent said window, the front edge ot said window arranged to rest in closed position on an upwardly-inclined, cushioned flange-member of said plate, said pivotcd window and said pivoted plate arranged to form elements of a lever-system whereby the front portion of said window is swung upwardly when said plate is swung inwardly.

13. In the cover ot a sound-prooi' cabinet '45 for a typewriting machine, in combination,

a piVotally-mounted glass window with a pivotally-mounted plate adjacent said window, the front edge et said window arranged to rest in closed position on an upwardlyinclined, cushioned. flange-member o" said plate, the latter being pivoted on two downwardly-projecting ears, one at each end o1 the plate. journaled on pins held in the front portion or' said cover, said plate and said window having connecting means whereby the front edge of said window is swung upwardly and said window-supporting flangemember swung downwardly when the pivotcd plate swings inwardly troni pressure ot an operatives lingers on its front side.

lll. A sound-prooi cabinet; lor a typewriting machine, having a lower body-part and a cover hinged to the back oi: said body-part, said cover haring a section ol its :Front portion cut away and the opening resulting theretrom arranged to be normally closed in part by a piVotally-mounted transparent window and the remainder by a pivoted plaie-member adjoining said window at the trent.

l5. A setuid-prooiI cabinet :tor a typewriting machine, having a lower body-part and a cover hinged to the baclc of said body-part, said cover haa/'ing a section or' its lfront portion cut away and the opening resulting therefrom arranged to be normally closed in part by a transparent window extending lengthwise oi' said cover pivotally mounted in the end thereof, the remainder oi said cover-opening arranged to be normally closed by a pivoted plate positioned in front oi said window, said plate having an upwardly-inclined cushioned Mange-member supporting the trent edge o; said window along its entire length.

le. A silencer-cabinet for a typewriting machine including' a cover having a visual opening, a pair oi' hinged leaves normally closing the opening and conditioned to be openedin unison, and means within said cabinet connecting said leaf-members, there being a counterbalance means connected to one of said members tending to close both ot said members.

JCI-IN IVLDHEIM. 

